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Avalanche Forecast

Archived

Apr 10th, 2025–Apr 11th, 2025

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Vancouver Island, East Island, North Island, South Island, West Island.

Avalanches are possible on wind-loaded features in the alpine.

Confidence

Moderate

Avalanche Summary

While no significant avalanche activity has been reported this week, wind slab avalanches probably occurred during the height of Thursday’s storm.

Snowpack Summary

Up to 30 cm of new snow is possible in higher terrain, and it’s likely to be heavily wind-affected. Amounts will taper off quickly below treeline, though the exact rain-snow line remains uncertain.

The new snow is expected to bond well to the strong and settled snowpack.

Lower elevations continue to melt out rapidly.

Weather Summary

Thursday Night

Cloudy with 0 to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1000 m.

Friday

Mostly cloudy with 0 to 2 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1000 m.

Saturday

Mostly sunny. 20 km/h northwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 m.

Sunday

Mostly cloudy. 20 km/h southwest ridgetop wind. Treeline temperature +1 °C. Freezing level 1600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • A hard crust on the snow surface will help strengthen the snowpack, but may cause tough travel conditions.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.